Process of manufacturing coal bricks, particularly from bituminous brown coal.



UNITED STATES iatnted iluly Q1, 190S.

JOHANN MATI-IIAS SCHWARZ, OE EIKEN, SWITZERLAND.

PROCESS OF MANUFACTURING COAL BRICKS, PARTICULARLY FROM BITUMINOUS BROWN C(lAL.

SPECIFICATION forming part of Letters Patent No. 734,002, dated July 21,1903. Application filed December 8, 1902. Serial No. 134,428. (No specimens.)

To all whom it may concern:

Be it known that I, J OHANN MATHIAS SOHWARZ, foreman, a citizen of the Republic of Switzerland, from Eiken, in the canton of Aargau, Switzerland, but at present residing in the city of Tangermiinde-on-the-Elbe,Kingdom of Prussia and German Empire, have invented a certain new and useful Process of Manufacturing Coal Bricks, Particularly from Bituminous Brown Goal, of which the following is a specification.

This invention has reference to a process for manufacturing bricks from coal-dust and refuse coal and from those kinds of bituminous or brown coal in particular which are not sufficiently bituminous to yield a solid brick when the powdered coal or coal-dust is treated by a very powerful pressure.

For the purpose of utilizing coal-dust and the waste from the breaking of so called brown coal or bituminous coal for the heating of stoves, of boilers, and in blast-furnaces also and for other industrial and household purposes it was usual heretofore to compress this waste or dust into bricks by the action of a very powerful pressure, the material usually containing enough binding or agglutinizing material as a component part that it was not necessary to introduce any binding material from the outside in order to manufacture a solid cohering brick in this manner. Of brown coals occurring on the European Continent it has been found that particularly the brown coal or lignite of the tertiary strata of the Mansfield formation, which is very rich in paraffin, could be successfully treated in this manner. Difficulty was, however, experienced in the treatment of brown coals or lignites which, like the Bohemian brown coal, are very high in carbon while low in paraffin, and it has not been possible heretofore to manufacture a coherent brick from such material without any foreign binding agent. These binding agentstar, pitch, and the like-are, however, very objectionable, as they yield a very sooty flame and liberate very obnoxious gases of a sometimes highlyrepulsive odor. My invention is intended to overcome this difficulty by the use of a material (waste from glue-works) which heretofore could only be used at best as a very poor fertilizing material of but nominal value, as

the valuable nitrogenous and phosphor-containing constituents have been eliminated to a large extent.

Inasmuch as lignites or bituminous coals, sometimes called brown coals, form a very important proportion of the coal-supply of the United States and as they are found just in those Southern and Western States chiefly (Colorado, Texas, Kentucky, Washington) where hard coal rich in carbon is not found and where animal industries are carried on, either directly or in the neighboring States, it is obvious that my invention can be easily carried out and is of high economical value.

In carrying out my invention I use browncoal' dust or waste that has been broken into fragments which are too small to be used like ordinary coal. These materials are finely ground, and I then add to it the waste from the manufacture of animal glue or sizing, which is usually manufactured from the Waste of packing-houses, of tanneries, shoemakers, and from whole hides, hairs, and the like. The waste obtained from these materials in the manufacture of glue has still retained a fibrous somewhat woolly structure, and aside from a very small amount 'of glue it contains the entire percentage of fatty substance which could not be removed in the glue-boiling and which is too poor to go into grease and if used as an admixture to fertilizers lessens their Value. On account of this amount of fatty materialthe powdered coal mixed with it as su mes the same properties as the waste from brown coal which is rich in paraffin, and the thus-obtained mixture is therefore as easily pressed into solid coherent bricks as the waste from the best grades of fatty brown coal. For most purposes I have found the following proportions to best answer all requirements of the trade:' About one thousand (1,000) parts of brown-coal dust or waste and two hundred and fifty (250) parts, more or less, of the fatty, slimy, and partly-fibrous waste from glue-works are intimately mixed and then pressed in the ordinary manner.

These bricks can be obtained at a very small cost. They are very high in heating value and are free from noxious gases.

What I claim, and desire to secure by Letters Patent of the United States, is

1. The process for manufacturing coal ICO bricks which consists in cornminuting coal matter, consisting of a mixture of brown-coal and particularly brown-coal waste, then mix- Waste and waste from glue-Works, the Whole ing therewith waste from the manufacture of in a highly-compressed state, substantially as animal glue, substantially as described, and described. 15 5 submitting the product to high pressure. I witness whereof I have hereunto set my 2. The process for manufacturing coal hand in presence of two Witnesses. bricks which consists in molding a mixture of one thousand parts comminuted brown-coal l JOHANN MATHIAS SCHWMM' waste and two hundred and fifty parts waste Witnesses: to from glue-works, under high pressure. GUSTAV FARBER,

3. The herein described composition of JAMES L. A. BURRELL. 

